Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Bloemhof, South Africa, especially given the region's semi-arid climate. Elevated UV levels pose significant risks for sunburn and long-term skin health, making it essential to stay informed about daily UV exposure. With peak UV Index values reaching 6 around midday, Bloemhof's sunny skies can quickly turn harmful without proper protection. By staying aware of these levels, you can enjoy the outdoors while safeguarding your skin from the sun’s harmful effects.
The UV Index over the day shows a dynamic range of exposure, starting off calm in the early hours. At 07:00 and 08:00, it remains at a gentle 1, perfect for a leisurely morning. As the sun climbs higher, the index rises steadily, reaching 2 by 09:00 and peaking at 6 around 12:00, indicating caution is necessary for outdoor activities. The intensity slightly dips from there, down to 5 by 13:00 and then to 4 at 14:00, before gradually decreasing to 1 by 16:00. Finally, the UV exposure diminishes to 0 by 18:00, signaling a safe end to the day. Stay mindful of those peak hours for a fun and safe experience in the sun!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 1 | low | 45 min |
09:00 | 2 | low | 45 min |
10:00 | 3 | moderate | 30 min |
11:00 | 5 | moderate | 30 min |
12:00 | 6 | high | 25 min |
13:00 | 5 | moderate | 30 min |
14:00 | 4 | moderate | 30 min |
15:00 | 3 | moderate | 30 min |
16:00 | 1 | low | 45 min |
17:00 | 1 | low | 45 min |
18:00 | 0 | low | 45 min |
19:00 | 0 | low | 45 min |
The UV Index shows notable seasonal fluctuations, with January and December presenting the highest levels at 16, indicating an extreme exposure category and a quick burn time of just 10 minutes. Other high-risk months include February and March, with UV indices of 15 and 13, respectively, also categorized as extreme. As spring approaches, April experiences a slight decrease to 10 (very high), while May and July shift to a high exposure category with indices of 7 and 6. Respectively, August and September elevate back to very high and extreme levels, with indices of 8 and 11. Residents and visitors should take appropriate precautions during the high-risk months of January, February, March, September, October, November, and December, ensuring adequate sun protection, especially during peak hours, to prevent harmful UV exposure.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Cape Town UVI | 14 | 13 | 11 | 8 | 5 | 3 | 4 | 6 | 9 | 11 | 12 | 14 |
Durban UVI | 14 | 13 | 12 | 9 | 6 | 4 | 5 | 7 | 9 | 11 | 13 | 15 |
Bloemhof | 16 | 15 | 13 | 10 | 7 | 5 | 6 | 8 | 11 | 13 | 14 | 16 |
Johannesburg UVI | 15 | 15 | 13 | 10 | 7 | 6 | 6 | 8 | 11 | 12 | 14 | 16 |
Pretoria UVI | 16 | 15 | 13 | 10 | 7 | 6 | 6 | 9 | 11 | 13 | 14 | 16 |
Soweto UVI | 16 | 15 | 13 | 11 | 7 | 6 | 6 | 8 | 11 | 13 | 15 | 16 |